Design a general ventilation system
How to design a ventilation system

Premises with non-specific pollution: "Premises in which pollution is linked solely to human presence, with the exception of sanitary premises" (article R. 4222-3/3° of Code du travail ).

Premises with specific pollution: "Premises in which dangerous or annoying substances are emitted in the form of gases, vapors, solid or liquid aerosols other than those linked solely to human presence, as well as premises which may contain sources of potentially pathogenic micro-organisms and sanitary premises" (article R. 4222-3/4° of...